LoFive is a lightweight SiFive Freedom E310 open source SoC evaluation kit. The E310 leverages the Free and Open RISC-V Instruction Set Architecture originally developed by UC Berkeley and now has wide industry support via the RISC-V Foundation. Don't let the board's understated name and openness fool you - this MCU packs some impressive specs and the board was designed by the prolific QWERTY Embedded Design founder, Michael Welling.
(click to open a larger image)
MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz)
Storage - 128-Mbit SPI flash (ISSI IS25LP128)
Expansion - 2x 14-pin headers with JTAG, GPIO, PWM, SPI, UART, 5V, 3.3V and GND
Misc - 1x reset button, 16 MHz crystal
Power Supply - 5V via pin 1 on header; Operating Voltage: 3.3 V and 1.8 V
Not available / campaign funded, end date:
Sat, 07 Oct 2017 16:59:00 -0700
Factory Lead Time
3-5 weeks after close of campaign.
GroupGets will handle the shipment of orders for this product.
Options and Add-Ons
FTDI Breakout - FTDI FT2232H-56Q MINI MDL
FTDI Breakout used for programming the LoFive.
Premium Female/Male 'Extension' Jumper Wires - 20 x 3" (7.62cm)
20x3" (7.62cm) Female to Male Jumper Wires.
Premium Male/Male Jumper Wires - 20 x 3" (7.62cm)
20x3" (7.62cm) Male to Male Jumper Wires.
Premium Female/Female Jumper Wires - 20 x 3" (7.62cm)
20x3" (7.62cm) Female to Female Jumper Wires.
Full sized breadboard
This is a 'full-size' breadboard, 830 tie points. Good for small and medium projects. It's 2.2" x 7" (5.5 cm x 17 cm) with a standard double-strip in the middle and two power rails on both sides. The back is made of foam double-sided tape, if you remove the protective paper you can attach it to a flat clean surface.
Diffused RGB 5mm LED (25 pack)
Diffused 5mm tri-color LEDs with separate red, green and blue LED chips inside!
This is a group buy campaign that needs to acquire at least the stated minimum amount of pledges from backers like you before the Unit Deliverable and any Add-Ons ship. We do not charge anyone until the Progress above hits 100% or greater, otherwise there is no charge. All campaign products are vetted as existing and functional so your order will be fulfilled within the Factory Lead Time if the campaign succeeds. Please see our FAQ page for more details on our billing process.
I have just created the GroupGet for LoFive RISC-V!
Post last edited: about 1 year ago
Shipping to europe is so expensive, definitly trying to get more people to do a groupbuy for this. Netherlands anyone?
Another creative overseas shipping option may be to use "shipito" to send this board and items from other US sites to reduce overall shipping costs: https://www.shipito.com/en/. We used to have cheaper overseas shipping options but we had a high rate of loss of expensive items. We are re-evaluating our current stance for lower cost items going forward but unfortunately we won't have a solution implemented for this campaign.
Quick Update: The SiFive chips are on order and the contract manufactuer is ramping up the board fab now
Post last edited: about 1 year ago
Quick update: The SiFive MCU's are on the way to the CM. The test rig is being designed by Qwerty and the CM is going to produce a test panel for us to QA with before we make the full batch.
Great board! I'm trying to get this but it says "Buy Disabled"... is there a way to order this now?
Jasem, Round 1 is closed but we are producing extras to put in our store. Check back in a few weeks.
What is the programming procedure? How do I write to the onboard storage?
Any documentation you can point me to would be appreciated.
Is this just using SPI, I'm wondering what other programmers may work or whether there is something very specific to the mentioned board. I can appreciate if you only want to support folks who are using the programmer you have, cuts down possibilities. It would be nice to know, though. I'm getting two boards so can do comaparitive testing on programmers. Might try the Adafruit single channel FT232H https://www.adafruit.com/product/2264